Snow plow



June 20, 1939. R NRY ET AL 2,163,279

snow PLQW Filed Jan. 26, 1938 2 Sheets-Sheet 1 ,0 w (Ittorneg June 20, 1939. HENRY AL 2,163,279

SNOW PLOW Filed Jan. 26, 1958 2 ShGBtS ShBBt 2 ZSmaentorS Man 8 w (Ittomeg 'plows.

Patented June 20, 1939 UNITED STATES PATENT OFFICE SNOW PLOW AlbertR. Henry, .Salina, and Marion C.'Wills, Topeka, Kans.

Application January 26, 1938, Serial No. 187,012

3 Claims.

aOur invention relates to improvements in snow It relates particularly to tractorpropelled .snowiplows' ofa type in which the tractoris disposed .at the rear of the moldboard of'the plow andLbetWeen longitudinal rearwardly extending side railsattachedto the moldboard and having respectively engagement with two rub plates at- -tached to opposite sides of the tractor, for sta- 'bilizing the snowplow.

One :of the objects of our invention is the provision of novel meansby which the side rails can be-laterally adjustedto adapt the device to tractors of different widths.

'Another object of our invention is the provision of novel means 'of adjustment laterally and Jlongitudinallyof the side rails to adapt the device totractors of difierent widths and lengths and having rear draft means for drawing the plow ahead.

A further object of our invention is the provision of novel means for adapting the raisingand lowering meansof the snow plow to'the different adjustments to'be made with the side rails and rub plates.

Still another object of our invention is the provision of a novel snow plow, which is simple, cheap, strong, durablejnot likely to get out of order, which .is easily andqu'icklyfitted to tractors of different sizes, and which is eflicient in operation.

The novel features of our invention are hereinafter fully described and claimed.

In the accompanying drawings which illustrate the preferred embodiment of our invention,

"Fig. '1 is a plan View of our improved snow plow, with the moldboard raising and lowering -means omitted.

Fig.2 is a section on the'linel2-2 of Figrl. Fig. 3 is a view similar to Fig. l, showing a tractor operatively disposed between the side rails of the plow with the rails shown adjusted into engagement with the rub plates of the tractor.

'Fig. 4 is a side elevation, partly'broken away,

of our improved snow plow, showing portions of the raising and lowering mechanism, and showing in dotted lines a tractor operatively posi- "tioned relatively thereto.

Fig. 5 and Fig. 6 are'respectively sections on the lines 5-5 and 66 ofFig. 3.

Fig? is an enlarged view of a front portion of our improved snow plow, partly in plan and partly broken away, and showing the raisingand lowering mechanism.

Fig. 8 is an enlargedtransverse section of the plow looking forwardly, parts being broken away.

plates 6, is shown in "Figs. 4,17'and 8.

8, 9 and M are withdrawn, and the larger tractor I'd engaged with'the coupling 5 and the plates l 2.

Similar characters of reference designate similar parts in the different views.

I designates the usual concave-convex forwardly converging wings of the moldboard of the snow plow. Our invention provides a transi5 verse channel beam 2 with rearwardly extending flanges, and having outwardly and rear wardly divergingendportions.3 respectively fastened to the rearsides of the wings I, and hav- The inner sides of the side rails 5 are adaptedto have rubbing engagement with two rub plates (2 firespectively provided on opposite sides of the frame of a tractor 1,-for stabilizing the snow plow and preventing lateral swinging thereof. Such engagement of the rails '5 with the rub The 525 forward ends of the side rails '55 .are disposed in the channels of the brace'beam Z.

The rear endsof-the side-railsti are respectively provided with bracketsfi" attached to the rear 7 ends of the I beams, and having extending respectively through them vertical bolts 9, each adapted for'insertion through any one of a transverse row of holes ll in the adjacent end portion of a transverse draw bar i ll. Two horizontal plates l2 are fastened respectively to the upper 135 and lowersides of the draw bar it in the middle portion thereof, and are respectively provided with two vertically alined holes I3 through whichis inserted a bolt M attachedto a coupling l5 at the rear end of=the tractor l, disposecl be- -40 tween the side rails 5 and'the brace-beam 2 and draw bar").

To adapt the snow plow to a tractor which is wider and longer than the one shown, the bolts 245 substituted for the smaller one, after which the side rails 5 are adjusted to engage with the rub plates 6, following which thebolts'il and S are inserted in the proper holes sand ii, and the bolt It will be noted :that, when theside rails 5 are adjusted outwardly, to widen the space between them, the side rails will also be adjusted rear- Wardly, duetothe divergencerearwardly of the rows of holes 1-11, the'rebydengthening as well as widening the space between the rails 5, thereby adapting the plow to a wider and longer tractor. With the means of bolting the side rails 5 to the moldboard by inserting the bolts 8 in the holes 4 disposed in rearwardly and outwardly diverging rows in the moldboard, and. the bolts 9 in the holes I I arranged in two alined rows of holes in the draw bar Hi, when the side rails 5 have been adjusted toward or from each other and bolted in their adjusted positions, the draw bar I will have been simultaneously correspondingly changed in its distance from the moldboard. Thus the adjustment of the snow plow frame, comprising the moldboard, draw bar and side rails, as to width simultaneously gcorrespondingly adjusts it as to length.

For raising and lowering the forward portion of the plow, a cable l6 has its ends respectively attached to the upper ends of the rub plates 6, passing thence downwardly and forwardly under and engaged with two peripherally grooved wheels ll, disposed respectively at the inner sides of the side rails 5, and rotatable on two transverse bolts I8, each adapted for insertion in any one of a longitudinal row of holes I9 provided transversely through the web of the adjacent I beam 5, Figs. 4, '7 and 8.

The cable l6 passes from the grooved wheels I! forwardly into engagement with the outer edges of the wheels of two pulleys 20 attached respectively to the inner sides of the webs of the I beams 5. The cable then passes inwardly from the pulley wheels 20 into engagement with the under edges of two grooved wheels 2| respectively mounted on two pins 22 fastened to and extending rearwardly from the brace beam 2. From. the wheels 2| the cable l6 passes upwardly into an arcuate groove in the upper side of a member 23 fastened to the upper end of a vertical piston rod 24, the lower end of which is attached to a piston, not shown, in a vertical cylinder 25 supported in the brace beam 2, and having in its lower end an oil supply and drain pipe 26.

Suitable means, of usual structure, not shown, are provided for injecting oil into the cylinder 25 through the pipe 26, to force the piston rod 24 upwardly, and for withdrawing the oil through the pipe 26, to enable the piston rod to lower.

To raise the moldboard, oil is admitted into the cylinder 25 through the pipe 26 under the piston, thereby lifting the latter and with it the piston rod 24, thus lifting the cable [6 through the member 23 On which the cable rests. This lifting of the cable It will cause it to lift the wheels I"! and with them the side rails 5, thereby raising the moldboard I. By withdrawing oil from the cylinder 25 through the pipe 26, the piston will lower, thus lowering the middle portion of the cable I6, and enabling the front portion of the plow to lower to the desired position. The hydraulic jack comprising the cylinder 25 and the parts cooperating therewith, is of the usual type, and has the usual means, not shown, but well known in the art, for controlling the flow of oil into and out of the cylinder 25, or

for holding it therein at any desired height within its range.

The cable l6 provides one form of resilient means having running and supporting engagement with the wheels I1, and the latter form means for supporting, lifting and lowering the forward portions of the side rails and with them the moldboard I.

To adapt the cable I6 to operatively engage the wheels I! and the stabilizing members 6 in the different positions to which they may be adjusted, when the snow plow is used with tractors of different sizes or having different locations for the stabilizing members 6, the end portions of the cable 16 have respectively slidably adjustable on them clamps 21, each having a set screw 28 for tightly clamping the clamp on the cable, the clamps 21 respectively bearing against the stabilizing members 5 for holding the cable from sliding in the holes through which the cable extends in the stabilizing members. Other suitable means, however, may be employed for adjustably attaching the cable to the stabilizing members 6.

The cable I6 is attached to the stabilizing members 6 at points higher than the wheels IT, thereby enabling the stabilizing members to support the load.

As shown in Figs. 1, 3, '7 and 8, the inner upper flange of each side rail 5 is provided with a longitudinal row of notches 29 for receiving therethrough the cable Hi to suit the different positions to which the adjacent wheel I! may be adjusted.

To adapt the snow plow to any particular tractor, the side rails 5 are adjusted, as has been described, to bring them into operative engagement with the rub plates 6, after which the cable l6 has its end portions attached to the rub plates 6, and the clamps 2! then aifixed to bear against the rub plates, and the coupling 5 is attached by the bolt M to the plates I2 of the draw bar [0. The apparatus will then be in condition for use. By operating the hydraulic jack, the cable l6 may be operated to raise and lower the front end portion of the plow, as desired.

Many modifications of our invention, within the scope of the appended claims, may be made without departing from the spirit of our invention.

What we claim is:

1. In a tractor propelled snow plow of a type having a moldboard forward of and draft means at the rear of the tractor, the combination with a mold board having two rearwardly and outwardly diverging rows of holes, of draft means,

two longitudinal side rails adjustable toward and from each other to positions in which they will be adapted for stabilizing engagement with opposite sides respectively of the tractor, two bolts respectively extended through said rails and respectively insertible through the holes of said two rows for holding said rails in said positions, and means for attaching said rails to said draft means when said rails are in said positions, whereby said plow is adapted for use with tractors of different lengths and Widths.

2. In a tractor propelled snow plow having a frame adapted to encircle a tractor, said frame having at its front a moldboard, at its rear a draw bar having means for releasable attachment to the rear of the tractor, two side rails adjustable toward and from each other and respectively adapted for stabilizing engagement with the sides of the tractor, means for releasably fastening said side rails in their adjusted positions to said draw bar, and bolting means for releasably fastening said side rails to said moldboard by which the adjustment of said side rails on said moldboard and on said draw bar to change the width of said frame will correspond-= ingly simultaneously change the distance between said draw bar and said moldboard.

, 3. In a tractor propelled snow plow having a frame adapted to encircle a tractor having at its sides respectively two stabilizing members, in

combination with said stabilizing members, a frame having at its front a moldboard having two outwardly and rearwardly diverging rows of holes, a rear draw bar having releasable means for attachment to the rear of the tractor, two side rails adjustable toward and from each other and having respectively two longitudinal rows of holes, two bolts respectively inserted through said side rails and respectively one through the holes of one of said diverging rows, and the other through the holes of the other of said diverging rows for releasably fastening said side rails to said moldboard, two supporting wheels, two bolts respectively rotatably supporting said two wheels and insertible one in the holes of one of said longitudinal rows, and the other in the holes of the other longitudinal rows and respectively supported by said side rails, and means for raising and lowering said frame including flexible means attached to said stabilizing members and having running and lifting engagement with said wheels.

ALBERT R. HENRY. MARION C. WILLS. 

